in_array().txt

// JS equivalent of PHP's in_array
function in_array (needle, haystack, argStrict)
{
    // *     example 1: in_array('van', ['Win', 'van', 'hello World']);
    // *     returns 1: true
    // *     example 2: in_array('work', {0:'Win', work:'van', 1:'World'});
    // *     returns 2: false
    // *     example 3: in_array(1, ['1', '2', '3']);
    // *     returns 3: true
    // *     example 3: in_array(1, ['1', '2', '3'], false);
    // *     returns 3: true
    // *     example 4: in_array(1, ['1', '2', '3'], true);
    // *     returns 4: false
    var key = '', strict = !!argStrict;

    if (strict)
    {
        for (key in haystack) {
            if (haystack[key] === needle) {
                return true;
            }
        }
    } else
    {
        for (key in haystack) {
            if (haystack[key] == needle) {
            return true;
            }
        }
    }
    return false;
}//end func...